[hap-ee] adjective, -pier, -piest. 1.delighted, pleased, or glad, as over a particular thing: to be happy to see a person.

2.characterized by or indicative of pleasure, contentment, or joy: a happy mood; a happy frame of mind.

3.favored by fortune; fortunate or lucky: a happy, fruitful land.

  1. apt or felicitous, as actions, utterances, or ideas.

  2. obsessed by or quick to use the item indicated (usually used in combination): a trigger-happy gangster. Everybody is gadget-happy these days.